Performance Analysis of NOMA Random Access

This letter applies non-orthogonal multiple access to uplink random access systems, where the transmit power from each user equipment (UE) is received at the base station as one of <inline-formula> <tex-math notation="LaTeX">L </tex-math></inline-formula> target (re...

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Bibliographic Details
Published inIEEE communications letters Vol. 22; no. 11; pp. 2242 - 2245
Main Authors Seo, Jun-Bae, Jung, Bang Chul, Jin, Hu
Format Journal Article
LanguageEnglish
Published New York IEEE 01.11.2018
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Bistability
Channel estimation
Downlink
Fading channels
NOMA
Non-orthogonal multiple access
Nonorthogonal multiple access
Random access
Silicon carbide
Throughput
Uplink
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Summary:This letter applies non-orthogonal multiple access to uplink random access systems, where the transmit power from each user equipment (UE) is received at the base station as one of <inline-formula> <tex-math notation="LaTeX">L </tex-math></inline-formula> target (received) powers. More precisely, if a backlogged UE's channel gain is greater than a threshold, it randomly aims at one of the target powers with channel inversion. Then, the BS decodes the received signals with successive interference cancellation. This letter investigates the performance of this system in terms of throughput, access delay, energy efficiency, and bistability.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2018.2866376